Remove trial code, restore repository. Should not have committed this. Oh well. Let's continue this in a branch like I'm supposed to.

webpack.mix.js

@@ -1,88 +1,14 @@
 let mix = require('laravel-mix');
-// mix.autoload({
-//                  jquery: ['$', 'window.jQuery']
-//              });
 
-//mix.extract(['jquery','chart.js','accounting','chartjs-color-string','chartjs-color','moment','color-name'],'public/v1/js/ff/vendor.js');
-mix.extract([],'public/v1/js/ff/vendor.js');
+/*
+ |--------------------------------------------------------------------------
+ | Mix Asset Management
+ |--------------------------------------------------------------------------
+ |
+ | Mix provides a clean, fluent API for defining some Webpack build steps
+ | for your Laravel application. By default, we are compiling the Sass
+ | file for the application as well as bundling up all the JS files.
+ |
+ */
 
-mix.extend(
-    'firefly_iii',
-    new class {
-        constructor() {
-            this.toCompile = [];
-        }
-
-        /**
-         * The API name for the component.
-         */
-        name() {
-            return 'firefly_iii';
-        }
-
-        /**
-         * Register the component.
-         *
-         * @param {*} entry
-         * @param {string} output
-         */
-        register(entry, output) {
-
-            entry = [].concat(entry).map(file => new File(file));
-            output = new File(output);
-
-            this.toCompile.push({ entry, output });
-
-            Mix.bundlingJavaScript = true;
-        }
-
-        /**
-         * Assets to append to the webpack entry.
-         *
-         * @param {Entry} entry
-         */
-        webpackEntry(entry) {
-            this.toCompile.forEach(js => {
-                entry.addFromOutput(
-                    js.entry.map(file => file.path()),
-                    js.output,
-                    js.entry[0]
-                );
-            });
-        }
-
-
-        dependencies() {
-            return ["@babel/preset-flow",'@babel/preset-react'];
-        }
-
-        /**
-         * webpack rules to be appended to the master config.
-         */
-        webpackRules() {
-            return [].concat([
-                                 {
-                                     test: /\.jsx?$/,
-                                     exclude: /(node_modules|bower_components)/,
-                                     use: [
-                                         {
-                                             loader: 'babel-loader',
-                                             options: this.babelConfig()
-                                         }
-                                     ]
-                                 }
-                             ]);
-        }
-
-        /**
-         * Babel config to be merged with Mix's defaults.
-         */
-        babelConfig() {
-            return {
-                presets: ["@babel/preset-flow",'@babel/preset-react'],
-                plugins: [["@babel/plugin-proposal-class-properties"]]
-            };
-        }
-    }()
-);
-mix.firefly_iii('resources/js/v1/index.js', 'public/v1/js/ff/index.js');
+mix.js('resources/assets/js/app.js', 'public/v1/js');